Compact microcubic structures platform based on self-assembly Prussian blue nanoparticles with highly tuneable conductivity |
| |
Authors: | Cantanhêde Silva Welter Guix Maria Alarcón Angeles Georgina Merkoçi Arben |
| |
Institution: | Institut Català de Nanotecnologia, Universitat Aut?noma de Barcelona (UAB), 08193 Campus Bellaterra, Barcelona, Catalonia, Spain. welter@ufpi.edu.br |
| |
Abstract: | Control of molecular and supramolecular properties is used to obtain a new advanced hybrid material based on Prussian blue nanoparticles (PB NPs). This hybrid material is obtained through a self-assembled Layer-by-Layer (LbL) approach combining the advantageous features of β-cyclodextrin (β-CD) polysaccharides, PB NPs and poly(allylamine hydrochloride) from electrostatic interaction between the deposited layers. Transmission electronic microscopy images suggested that PB NPs were protected by β-CD polysaccharides that prevent the aggregation phenomena. In addition, as confirmed by scanning electronic microscopy images, it was found that PB NPs are organized in microcubic supramolecular like structures via a mesoscale self-assembly process. Interestingly, the 3-bilayer {PAH/PB-CD} film exhibited a higher density of microcubic structures and a high electrochemical response with PB sites available for redox reactions at a supramolecular level. By utilizing fewer bilayers and consequently less material deposition, the formed {PAH/PB-CD} multilayer films of a tuneable conductivity can be expected to have interesting future applications for host-guest like dependent electrochemical biosensing designs. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|